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That's the big difference. A breathalyzer tells if you're right now actively impaired. Cannabis tests simply show that sometime in the past 30 days you smoked. Doesnt show active impairment.

But the real reason why cannabis was so heavy handed criminalized was because it was a "black, hippie, and anarchist" drug. https://www.aclu.org/issues/smart-justice/war-marijuana-blac...

We might actually be turning that around, only after 90 years.

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Mouth swabs are a more reasonably analog to breathalyzers for cannabis, although even with those the detection period can be up to 48-72 hours. But still, much better than the months long detection period for the more common urine tests.

My hope is once its legalized fully, more effort can be put into researching and designing more sensitive tests until we have something that is equally as capable as breathalyzers are(which is questionable in and of itself, but I'll settle for equal treatment under the law for now rather than aiming for perfection).

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